Cooking range with ventilating hood



H. L. .WARREN Filed April 10, 1945 COOKING RANGE WITH VENTILATING HOOD Se t, 27, 1949.

Patented Sept. 27, 1949 ENTItO- F COOKING RANGE WITH VENT LATINGY V noon Harry L. Warren, South PasadenagCalifi, assignor to Southern California Gas Company, Los Angeles, Calif., a. corporation of California Application April 10, 1945, Serial No. 587,527

11 Claims. (01. 126-299) My invention relates to cooking range with Ventilating hood, and among'the objects of my invention are:

or broiler.

Third, to provide a cooking range'with ventila i- .ing hood which incorporates a warming shelf for heating dishes, or for maintaining the food warm between cooking and serving;

Fourth, to provide a cooking'range with ventilating hood-wherein .the heat from the oven or broiler may be introduced 'intothe room, containing the range,:rather than be exhaustediout side,so that the range fnay be employed as ,aspace heater. 7

Fifth, to ,provide' a cookingzrangewith ,ventilating hoodandassociated manifold systemwhich doesnot require dampers or other, valve; control means to elfectthe desired flow of flue gases and Sixth; to provide cafcooking rangewit 1' 1 .ven- I tilatinghood and associatedmanifold system which is inherentlysafei-in that should: there be a back :now therethrough; such flow. is; hot-1611" V rectecl into the ovenor broiler but is relieved; and further, under'norfn'al conditions of operations, 1.;

draws ambient airfrom'the'froom into the ventilator system as well as the flue gases and vapors, to reduce the average temperature within the ventilator system.

;With the above-land other objects in view, reference is directed to the accompanying:draw--' ings, in which:

Fig. 1 is a fragmentary perspectiveviewiof the back side of 'a'range equipped with my'ventilating hood with a portion of the hood shown in section.

Fig. 2. is afragmentarylsectionalviewtaken substantially through 2 2 ofFig. 1. I

- Fig. '3 is a sectional view in plan taken substantially along'the lines-'3 of 'Figeli.

My cooking range withventilating 'hoodmay be adapted to various' styles and types offkitchen ranges. In'the illustration, a range structure I is shown, which includes a topplate or .work" surface 2 having a series ofburners 3, in this case,

'four burners arranged "in a single row; Below the top plate 2.is located an oven 4 and a broiler la indicated by dotted lines'in Fig. 3.

A back plate 5 extends upwardly from the top plate 2,'and its upperend is provided with a for- Wardly directed and slightly.upwardlyinclined V ballle plate 6. Over the baffle plate 6 is positioned a hood ,or'cover I which :is preferably flat to form a shelf; Theforward edge of the hood is provided with a depending skirt or flange 8 overhangingthe forward extremity of the baffle plate 5 and spaced therefrom to form an entrance slot 9.- The, bafiie plate. and hood form a diverging passageway occupying the width of the range and extending to the rear thereof, and terminatingin an outlet slot' IU. I I

The-outlet slot; I ll is covered by a manifold II secured to therear side of the rangev and extending approximately the width thereof. 'fold I I includes a central chamber I2 having The manidownwardly converging lower-walls I3, and communicates withan exhaust duct I4 which extends down the backsideof the range structure. The exhaust ductrcommunicates with the intakeside of a suitable exhauster- I5 operated by an electric motor I6. The exhauster I5 dischargesinto an exhaust pipe I! which may lead under thefloor of the kitchen and extend laterally to a suitable discharge point. i

The manifold I I'is provided with compartments I8 at each end, andbafile lips I9 continuing from the lower walls :I3- project into these compartments. Ducts 20 extend downwardly from the end compartments l8 and terminate in intake canopies or boxes '21 secured tothe rear side of V the range structure. The forward sides of the intake canopies 2I. are formed by the range structure itself, and the lower sides of the intake can opies are completely .open as indicated by 22, to form relief openingsof large area. Slots 23 are provided in the range structure and communicate between theoven 4 or broiler and the corresponding intake canopies.

Operation of the cooking range with ventilating hood is as follows:

During operation of therange and oven withoutoperation of the exhauster, the gases formed in the oven pass through the slots 23 up through the ducts 20;andinto' themanifold II without substantial restriction and without drawing a material quantity of air up through the relief opening 22. When the fan :is in operation, the

same flow occurs andl the influence of the exzhauster is-to draw airzthrough the entrance slot under this condition of operation through the entrance slot 9 and hood structure than is offered to the flow of air through the duct 29 and over the bafiie l9. This tends to reduce the temperature. During operation of the exhauster, air, 5 vapor and fumes from the top of the stove are drawn through the entrance slot 9, and discharge from the outlet slot Ill into the manifold H and continue down the exhaust duct l4-this flow likewise being indicated by solid arrows in Fig. 1.

When the eXhauster is not in operation and the oven or broiler, or both are functioning, the gases and vapors issue from the slots 23, flow upwardly through the ducts 20 around the {baffle lips l9 and continue upwardly through the man- 15 ifold l l into the slot H3 and discharge from the slot 9 at the forward side of the hood cover, as indicated by dotted arrows in Fig. 1.

Should there exist for any reason, a higher pressure in the manifold ll than exists at the intake canopies 2!, the gases from the oven or broiler are free to flow downwardly and out the relief openings 22. Thus irrespective of the pressure conditions in the ventilating hood structure, the oven and broiler as well as the top of the stove, may continue to be used without danger.

It will be noted that the oven or broiler is not prevented from use as a space heater, by reason of the ventilating canopy, for as pointed out above, when the exhauster I5 is not in operation, 30 the gases from the oven or broiler discharge from the slot i9 and into the room containing the stove.

In the course of cooking a meal either on top of the stove, or by means of the broiler or oven, it is often desirable to heat plates, or maintain the food heated between cooking and serving. The shelf afforded by the hood cover 1 admirably serves this purpose, as the rising heat from the top of the stove may be employed to heat the hood cover '1 when the exhauster is in operation, or the heat from the oven or broiler may be so employed when the exhauster is not in operation.

Many other embodiments of the invention may be resorted to without departing from the spirit of the invention.

I claim:

1. A hood structure for ranges having an ex posed cooking surface and an enclosed cooking compartment below, said hood structure 60311- prising: a hollow shelf extending over said cook-- ing surface from the back side thereof and having an opening thereto along its extreme d margin; a manifold communicatingwith t terior of said shelf along its back edge pending therefrom; a duct extending upwardly from the enclosed cooking compartment to v.ed manifold; and an exhauster having its int. side connected with said manifold to withdr gases simultaneously from said exposed coo ing surface through said hollow shelf and manifold and to withdraw gases from said cooking compartment through said duct and said manifold.

2. A hood construction as set forth in claim 1, wherein said duct has a relief opening below its communication with said enclosed cooking compartment whereby reversed flow of air through said ducts caused to bypass said enclosed cooking compartment and whereby cooling air is entrained with gases discharging upwardly in said duct from said cooking compartment.

3. A hood construction as set forth in claim 1, wherein said duct, manifold and hollow shelf define a free passageway communicating with the forward opening of said hollow shelf whereby, during non-operation of said exhauster, gases from said enclosed cooking compartment may flow through said manifold, through said shelf and out said opening.

4c. A hood structure for ranges having an ex posed cooking surface and an enclosed cooking compartment therebelow, said hood structure comprising: a rear wall extending upwardly from .said cooking surface; a hollow shelf extending forwardly from said rear wall and having a depending forward skirt and an opening immediately behind and shielded by said skirt; a depending manifold at the back side of said wall having its upward extremity communicating with the rear side of said shelf along its length; a duct extending from the cooking compartment to the underside of said manifold; and an exhauster having its intake side connected with said manifold to withdraw gases from said exposed cooking surface through said hollow shelf and to withdraw' gases from said cooking compartment through said duct.

5. A hood construction as set forth in claim 4, wherein said duct is provided with a relief opening below its communication with said enclosed cooking compartment whereby reversed flow of air through said ducts is caused to bypass said enclosed cooking compartment and whereby cooling air is entrained with gases discharging upwardly in said duct from said cooking compartment.

6. A hood construction as set forth in claim 4, wherein said duct, manifold and hollow shelf define "a free passageway communicating with the forward opening of said hollow shelf whereby; during non-operation of said exhauster, gases from said enclosed cooking compartment may 'flow through said manifold, through said shelf and out said opening; "I. A hood structure for ranges having an ex posed cooking surface with a row of burners ,therealong and enclosed oven and broiler compartments therebelow, said hood structure comprising: a rear wall extending upwardly from said cookin surface; a hollow shelf extending forwardly from said rear wall and having a depending forward skirt overhanging said burners, said skirt and underside of said shelf defining a slot communicating with the interior of said shelf and extending the length of said cooking surface; a manifold at the back side of said wall communieating with the rear side of said shelf along its length, to receive gases from or discharge gases throughsaid slot, said manifold including downwardly converging lower walls and baffled passages at its lateral extermities; ducts communicating between said oven and broiler compartments and said bafllled passages; an exhaust duct leading from the central portion of said manifold; and an exhaust fan communicating with said exhaust duct to withdraw gases from said oompartments and from said cooking surface through said shelf.

8. A hood structure for ranges having an exposed cooking surface with a row of burners therealong and enclosed oven and broiler compartments below, said hood structure comprising: a rear wall extendin upwardly from said cooking surface; .a hollow shelf extending forwardly from said rear wall and having a depending forward skirt overhanging said burners, said skirt and underside of said shelf defining a slot communicating with the interior of said shelf and extending thelength of said cooking surface; a manifold at the back side of said wall communicating with the rear side of said shelf along its length; a duct extending from the cooking compartment to the underside of said manifold; and an exhauster having its intake side connected with said manifold to withdraw gases from said exposed cooking surface through said hollow shelf and to withdraw gases from said cooking compartment through said duct.

9. A hood structure for ranges having a series of exposed cooking burners and an enclosed cooking compartment therebelow, said hood structure comprising: a wall behind said exposed cooking burners; a hollow shelf extending forwardly from said back wall over said burners and defining openings along its forward and rearward margins, said openings being in communication through said shelf, the upper wall of said shelf forming a utensil supporting surface; a manifold communicating with said shelf and disposed rearwardly of said wall; a duct communicating between said manifold and said enclosed cooking compartment; means forming an exhaust passage communicating with said manifold; and an exhauster in said passage for withdrawing vapors and fumes simultaneously from said exposed burners and said enclosed compartment.

10. A hood structure for ranges having a series of exposed cooking burners and an enclosed cooking compartment therebelow, said hood structure comprising: a wall behind said exposed cooking burners; a hollow shelf extending forwardly from said back wall over said burners and defining openings along its forward and rearward margins, said openings being in communication through said shelf, the upper wall of said shelf forming a utensil supporting surface; a manifold communicating with said shelf and disposed rearwardly of said wall; a duct communicating between said manifold and said enclosed cooking compartment; means forming an exhaust passage communicating with said manifold; and an exhauster in said passage for withdrawing vapors and fumes simultaneously from said exposed burners and said enclosed compartment; said duct being in communication with said hollow shelf through said manifold whereby, when said exhauster is inactive, the heated products issuing from said enclosed cooking compartment discharge from the forward opening or said shelf and heat the utensil supporting wall thereof.

11. A hood structure for ranges having a series of exposed cooking burners and an enclosed cooking compartment therebelow, said hood structure comprising: a wall behind said exposed cooking burners; a manifold disposed behind said wall; a hollow shelf communicating with said manifold and extending forwardly from said wall over said burners, said shelf terminating in an opening adapted to admit fumes from said burners and volatile substances which may be driven off during cooking of materials on said burners; a duct leading upwardly from said enclosed cooking compartment to said manifold; and means for exhausting said manifold to draw simultaneously fumes from said enclosed cookingcompartment and from said exposed cooking burners, said exhausting means capable of being rendered inactive, whereby. heated products from said enclosed cooking compartment flow upwardly through said duct, manifold, and out the forward opening of said shelf.

HARRY L. WARREN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 607,976 Amos July 26, 1898 1,710,586 McCrory Apr. 23, 1929 1,895,371 Briegel Jan. 24, 1933 1,963,281 Rogers June 19, 1934 1,969,565 Klemme Aug. 7, 1934 7 2,060,398 Lenke Nov. 10, 1936 2,077,496 Sonntag Apr. 20, 1937 2,081,640 Petersen May 27, 1937 2,361,011 Chambers Oct. 24, 1944 2,376,571 Brumbaugh May 22, 1945 FOREIGN PATENTS Number Country Date 370,160 Great Britain Apr. 7, 1932 537,140 Germany Oct. 30, 1931 

